The Knack were a very, very powerful band, and you got to understand, when they came in, all the punk stuff was still going on. There was an amazing conflict within the scenes.

The greatest gift of leadership is a boss who wants you to be successful.

Leadership is a trait; it's not a skill.

Leadership cannot be taught. Either you're a leader by the time you're 12 years old, or you never will be.

There's no law of physics that says we have to be an unsustainable society - in fact, quite the opposite. The planet's ready to work with us if we're ready to think differently, but we do have to make that jump and start to do things in new ways.

My experience of ships is that on them one makes an interesting discovery about the world. One finds one can do without it completely.

I understand that space travel and expansion is just as much about altering ourselves, our attitudes, our social structures, our very biology, as it is about altering the places we choose to live.

There are two - parallel - universes of science. One is the actual day-to-day work of scientists, patiently researching into all parts of the world and sometimes making amazing discoveries. The other is the role science plays in the public imagination - the powerful effect it has in shaping how millions of ordinary people see the world.